Frequency Modulation Optimization of Nonlinear Optical Z-scan by High Repetition Rate Femtosecond Laser

被引：0

作者：

Abidin, M. S. Z. ^{[1
]}

Noor, A. S. M. ^{[1
]}

Mahdi, M. A. ^{[1
]}

Rashid, S. A. ^{[2
]}

机构：

[1] Univ Putra Malaysia, Fac Engn, Dept Comp & Commun Engn, Serdang 43400, Malaysia

[2] Univ Putra Malaysia, Fac Engn, Dept Chem & Environm Engn, Serdang 43400, Malaysia

来源：

2013 IEEE 4TH INTERNATIONAL CONFERENCE ON PHOTONICS (ICP) | 2013年

关键词：

Nonlinear refractive index; Two-photon absorption cross-section; Z-scan; Thermai lensing; FLUORESCENCE MICROSCOPY; ABSORPTION;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Nonlinear optical properties of 2-(2-hydroxyethyl)-6-(morpholin-4-yl) -1H-benzo[de]isoquinoline- 1,3(2H)- dione pigment material is investigated with frequency modulation of 250 MHz femtosecond high repetition rate (HRR) laser by an optical chopper. Thermal lensing formation on the material due to thermal build up from HRR laser leads to measurement ambiguity of nonlinear refractive index (NLRI) and two-photon absorption cross section (TPACS). Optimized optical chopper frequency range of 50% duty cycle modulated laser beam effectively reduces laser contact time on the material and resulted in improved NLRI and TPACS of -8.23 x 10(-18) m(2)/W and 2.96 GM respectively.

引用

页码：90 / 92

页数：3

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